Knowledge base for software setup, errors, and daily tool work.

How to Fix Outlook 404 Not Found Error in OWA

When you try to open Outlook on the web (OWA) and see a 404 Not Found error, it usually means the...

FFmpeg Audio Out of Sync: Practical Fixes

You encoded a video with FFmpeg and now the audio is ahead or behind by a fraction of a second. T...

How to Clear Windows Defender Cache Without Rebooting

If Windows Defender is acting up—slow scans, high CPU usage, or outdated definitions—you may need...

Fix PowerShell Startup Script Not Running After Logon

You’ve set up a PowerShell script to run at startup, but after logging in, nothing happens. The s...

Fix Microsoft Store Error 0x80073cf0: Invalid Configuration

When you see error code 0x80073cf0 in the Microsoft Store, it usually means the store or an app h...

Outlook Authentication Failed: Checklist to Verify Credentials